CN109749801A - One kind is using methanol as detonator denitration type water-coal-slurry formula - Google Patents
One kind is using methanol as detonator denitration type water-coal-slurry formula Download PDFInfo
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- CN109749801A CN109749801A CN201711064823.0A CN201711064823A CN109749801A CN 109749801 A CN109749801 A CN 109749801A CN 201711064823 A CN201711064823 A CN 201711064823A CN 109749801 A CN109749801 A CN 109749801A
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Abstract
The invention discloses one kind using methanol as detonator denitration type water-coal-slurry formula, it is made of brown coal powder, ammonium hydroxide and methanol；Lower heat value >=3500kcal/kg of the brown coal powder, heap density are 1600t/m3, partial size≤0.075mm quality of pc accounting >=95%；The ammonia mass fraction of the ammonium hydroxide is 5%, density 0.98g/cm3；The methanol is the methanol that industrial regular grade density is 0.79g/ml；The quality proportioning of the brown coal powder, ammonium hydroxide, methanol are as follows: 65%, 20%, 15%.The present invention is to provide special fuel in face arch and an after-burner with water-coal-slurry spray combustion for basic combustion mode of rear arch junction setting in the layer combustion chain grate boiler system reform using being directed toward, to form secondary high-temperature efficient burning framework, and it accordingly reduces fire grate and fires coal seam thickness, final efficiency of combustion, fire box temperature and the denitration effect for promoting boiler.
Description
Technical field
The invention belongs to fuel technology fields, and in particular to a kind of molten with burning Adjoint Type denitration by detonator of methanol
The formula of middle low heat value alcohol fluid carbon, that is, water-coal-slurry of liquid.
Background technique
Layer combustion chain grate boiler relative cycle fluidized-bed combustion boiler, why efficiency is not high enough for coal-powder boiler, and furnace temperature is relatively low,
Discharged nitrous oxides cannot get reasonable process control, and major reason is practical to be exactly, and be adapted with boiler rated power, with
Traveling-grate stoker does not have the coal-fired layer heap thickness of relative motion higher；Because coal-fired layer is higher on fire grate, it is self-possessed in combustion certainly
Heap density is so allowed to increase, voidage decline；And then to treat the coal-fired supply of combustion uneven not careful for the oxygen for carrying fresh air ... thus
It allows in coal-fired layer and is penetrated without due oxygen, so causing the insufficient of fired coal combustion.That is the passing layer generally accepted
It is mature to fire chain grate boiler, be using ripe set and today apparently its not reasonable Combustion chamber design as basic premise.Change
Layer combustion chain grate boiler is inefficient, and furnace temperature is lower, the predicament that discharged nitrous oxides cannot be controlled effectively, is based on more than ten years
Operative practice be absorbed in untiringly this direction, assert here: making full use of the space nargin of combustion chamber, in face arch and rear arch
Engaging portion, then an after-burner with water-coal-slurry spray combustion for basic combustion mode is set, structure casts secondary high-temperature efficient burning
Framework, and accordingly reducing fire grate combustion coal seam thickness ... should be apparently solution the most reasonable instantly.It is asked for above-mentioned
The comprehensive overall process inscribed in this thinking solves, and fuel ignition temperature needed for the second-time burning of " after-burner " will be based on
Actually give specific, this hot-cast socket process also needs to have burning Adjoint Type denitration function.Several times retrieval tries in fact with larger samples, I
Find market it is existing for spray combustion fuel be all not met by these demands.Have no alternative but, through formula deliberation and scientific research repeatedly
Practice is thought deeply around above system, is adapted with this specific fuel design, a kind of to burn using methanol as detonator with denitration
The water-coal-slurry of Adjoint Type effect is still voluntarily researched and developed trial-production by applicant and completed.
Summary of the invention
The technical problem to be solved by the present invention is to become " after-burner " in layer combustion chain grate boiler transformation
For the purpose of dedicated spray combustion fuel, it is intended to promote efficiency of combustion, fire box temperature and the denitration effect of layer combustion chain grate boiler.
To achieve the above object, the present invention adopts the following technical scheme that, a kind of using methanol as detonator denitration type water-coal-slurry,
It is made of brown coal powder, ammonium hydroxide and methanol；
Lower heat value >=3500kcal/kg of the brown coal powder, heap density are 1600t/m3, partial size≤0.075mm coal dust
Quality accounting >=95%, volatile matter index >=25%, total moisture index≤35%, sulfur-bearing figureofmerit≤0.7, ash content index≤25%；
The ammonia mass fraction of the ammonium hydroxide is 5%, density 0.98g/cm3, the ammonia mass content of original solution 25-28% ammonium hydroxide is
25-28%, evaporation residue≤0.004%, chloride≤0.0001%, sulfide≤0.00005%, sulfate≤0.0005%, carbonic acid
Salt (CO2Meter)≤0.002%, phosphate≤0.0002%, lead≤0.0001%；
The methanol is the methanol that industrial regular grade density is 0.79g/ml；
The quality proportioning of the brown coal powder, ammonium hydroxide, methanol are as follows: brown coal powder accounts for 65%, ammonium hydroxide 20%, methanol 15%.
Further, the Lower heat value >=3500kcal/kg, heap density are 1600t/m3Brown coal powder be basic combustion
Material, methanol are detonators, and the ammonia spirit that mass fraction is 5% is the diluent of brown coal powder, while being also the denitration of basic fuel
Solution, that is, denitrfying agent.
It is of the present invention a kind of using methanol as the preparation method of detonator denitration type water-coal-slurry, include the following steps:
S1, lignite is crushed, partial size≤0.075mm of wet grinding to 95% coal dust；
S2, by S1 step brown coal powder and ammonia mass fraction be 5% ammonium hydroxide, industrial regular grade density be 0.79g/ml's
Methanol is made after carrying out mechanical stirring mixing according to the quality proportioning of 65:20:15 using methanol as detonator denitration type water-coal-slurry；
S3, water-coal-slurry obtained in S2 step is carried out to quality testing, storage, it is spare.
Further, according to the concentration of water-coal-slurry prepared by above-mentioned preparation method be 65%, viscosity 800-1200mPa.s,
Ash content≤25%, calorific capacity >=3500Kcal/kg, average grain diameter≤0.075mm, melting temperature >=1250 DEG C, volatile matter >=20%,
Stability reaches static storage and irrecoverability precipitating does not occur within one month.
Beneficial effects of the present invention:
Of the invention is to be arranged in the layer combustion chain grate boiler system reform in face arch and rear arch junction using being directed toward
One after-burner with water-coal-slurry spray combustion for basic combustion mode provides special fuel, efficiently fires to form secondary high-temperature
Buck structure, and accordingly reduce fire grate and fire coal seam thickness, final efficiency of combustion, fire box temperature and the denitration effect for promoting boiler.
Specific embodiment
The embodiments described below are only a part of the embodiment of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment one, using methanol as detonator denitration type water-coal-slurry, it is made of one kind brown coal powder, ammonium hydroxide and methanol,
The quality proportioning of the brown coal powder, ammonium hydroxide, methanol are as follows: brown coal powder accounts for 65%, ammonium hydroxide 20%, methanol 15%；The low level of the brown coal powder
Calorific value >=3500kcal/kg, heap density are 1600t/m3, partial size≤0.075mm quality of pc accounting >=95%, volatile matter
Index >=25%, total moisture index≤35%, sulfur-bearing figureofmerit≤0.7, ash content index≤25%；The Lower heat value >=
3500kcal/kg, heap density are 1600t/m3Brown coal powder be basic fuel；
The ammonia mass fraction of the ammonium hydroxide is 5%, density 0.98g/cm3, the ammonia mass content of original solution 25-28% ammonium hydroxide is
25-28%, evaporation residue≤0.004%, chloride≤0.0001%, sulfide≤0.00005%, sulfate≤0.0005%, carbonic acid
Salt (CO2Meter)≤0.002%, phosphate≤0.0002%, lead≤0.0001%；The ammonia spirit that the mass fraction is 5% is brown
The diluent of coal dust, while being also denitration solution, that is, denitrfying agent of basic fuel.
The methanol is the methanol that industrial regular grade density is 0.79g/ml, and methanol is detonator, several skills of methanol
Art index should be as follows: coloration≤10Hazen(platinum-cobalt color number), density 0.791-0.793g/cm3, boiling range≤1.5 DEG C, permanganic acid
Potassium test >=20min, moisture content mass ratio≤0.2%, sour mass ratio (in terms of HCOOH)≤0.005%, alkali mass ratio is (with NH3Meter)
≤ 0.0015%, evaporation residue mass ratio≤0.005%.
It is of the present invention a kind of using methanol as the preparation method of detonator denitration type water-coal-slurry, include the following steps:
S1, lignite is crushed, partial size≤0.075mm of wet grinding to 95% coal dust；
S2, by S1 step brown coal powder and ammonia mass fraction be 5% ammonium hydroxide, industrial regular grade density be 0.79g/ml's
Methanol is made after carrying out mechanical stirring mixing according to the quality proportioning of 65:20:15 using methanol as detonator denitration type water-coal-slurry；
S3, water-coal-slurry obtained in S2 step is carried out to quality testing, storage, it is spare.
Concentration according to the water-coal-slurry made by above-mentioned preparation method is 65%, viscosity 800-1200mPa.s, ash content
≤ 25%, calorific capacity >=3500Kcal/kg, average grain diameter≤0.075mm, melting temperature >=1250 DEG C, volatile matter >=20%, stabilization
Property reach static storage irrecoverability precipitating do not occur within one month.
This water-coal-slurry is pointing directly toward the aforementioned layer that is directed to and fires the chain grate boiler system reform, and then promotes boiler combustion effect
Rate, fire box temperature and denitration effect.
Selecting Lower heat value >=3500kcal/kg heap density is 1600t/m3Powdery fire coal (lignite) is as this water-coal-slurry basis
Thermal energy raw material, quality accounting 65%, the specific location and reality of this and " after-burner " set by layer combustion chain grate boiler transformation
Combustion state is adapted completely, and other fire coals of equal value can not substitute；
The mass fraction for selecting ammonia is 5% (density 0.98g/cm3) ammonia spirit as this liquid carbon (or water-coal-slurry) powdery fire coal
Dilution, this is that this liquid carbon (or water-coal-slurry) is allowed to have burning Adjoint Type denitration effect, and quality accounting 20% and is matched at the solution
The ratio of setting is also to be doomed by the position and form of second-time burning, and other similar solution and proportion of equal value can not substitute；
Select detonator of the industrial regular grade density for the methanol of 0.79g/ml as this liquid carbon (or water-coal-slurry), quality accounting
15%, this is considering for economical and second-time burning reliability, and other similar solution of equal value can not also substitute.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. one kind is using methanol as detonator denitration type water-coal-slurry formula, it is characterised in that: it is by brown coal powder, ammonium hydroxide and methanol group
At；
Lower heat value >=3500kcal/kg of the brown coal powder, heap density are 1600t/m3, partial size≤0.075mm coal dust matter
Measure accounting >=95%, volatile matter index >=25%, total moisture index≤35%, sulfur-bearing figureofmerit≤0.7, ash content index≤25%；
The ammonia mass fraction of the ammonium hydroxide is 5%, density 0.98g/cm3, the ammonia mass content of original solution 25-28% ammonium hydroxide is 25-
28%, evaporation residue≤0.004%, chloride≤0.0001%, sulfide≤0.00005%, sulfate≤0.0005%, carbonate
(CO2Meter)≤0.002%, phosphate≤0.0002%, lead≤0.0001%；
The methanol is the methanol that industrial regular grade density is 0.79g/ml；
The quality proportioning of the brown coal powder, ammonium hydroxide, methanol are as follows: brown coal powder accounts for 65%, ammonium hydroxide 20%, methanol 15%.
2. water-coal-slurry formula according to claim 1, which is characterized in that the Lower heat value >=3500kcal/kg, heap are close
Degree is 1600t/m3Brown coal powder be basic fuel, methanol is detonator, and the ammonia spirit that mass fraction is 5% is brown coal powder
Diluent, while being also denitration solution, that is, denitrfying agent of basic fuel.
3. according to claim 1 a kind of using methanol as the preparation method of detonator denitration type water-coal-slurry, which is characterized in that
Include the following steps:
S1, lignite is crushed, partial size≤0.075mm of wet grinding to 95% coal dust；
S2, by S1 step brown coal powder and ammonia mass fraction be 5% ammonium hydroxide, industrial regular grade density be 0.79g/ml's
Methanol is made after carrying out mechanical stirring mixing according to the quality proportioning of 65:20:15 using methanol as detonator denitration type water-coal-slurry；
S3, water-coal-slurry obtained in S2 step is carried out to quality testing, storage, it is spare.
4. preparation method according to claim 3, which is characterized in that the concentration of the water-coal-slurry is 65%, viscosity 800-
1200mPa.s, ash content≤25%, calorific capacity >=3500Kcal/kg, average grain diameter≤0.075mm, melting temperature >=1250 DEG C are waved
Hair point >=20%, stability reach static storage and irrecoverability precipitating do not occur within one month.
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| CN201711064823.0A CN109749801A (en) | 2017-11-02 | 2017-11-02 | One kind is using methanol as detonator denitration type water-coal-slurry formula |
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| CN201711064823.0A CN109749801A (en) | 2017-11-02 | 2017-11-02 | One kind is using methanol as detonator denitration type water-coal-slurry formula |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116355661A (en) * | 2021-12-27 | 2023-06-30 | 南方科技大学 | Method for improving energy density of methanol fuel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451082A (en) * | 2008-12-30 | 2009-06-10 | 中国科学院工程热物理研究所 | Method for preparing bituminous coal slurry |
| CN102434343A (en) * | 2011-09-30 | 2012-05-02 | 辽宁科技大学 | Oxygen-enriched combustion method of lignite methyl alcohol coal slurry fuel material in compression-type internal combustion engine |
| CN103450958A (en) * | 2013-09-05 | 2013-12-18 | 江苏省交通规划设计院股份有限公司 | Denitration sludge coal slurry and method for denitration by using same |
-
2017
- 2017-11-02 CN CN201711064823.0A patent/CN109749801A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451082A (en) * | 2008-12-30 | 2009-06-10 | 中国科学院工程热物理研究所 | Method for preparing bituminous coal slurry |
| CN102434343A (en) * | 2011-09-30 | 2012-05-02 | 辽宁科技大学 | Oxygen-enriched combustion method of lignite methyl alcohol coal slurry fuel material in compression-type internal combustion engine |
| CN103450958A (en) * | 2013-09-05 | 2013-12-18 | 江苏省交通规划设计院股份有限公司 | Denitration sludge coal slurry and method for denitration by using same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116355661A (en) * | 2021-12-27 | 2023-06-30 | 南方科技大学 | Method for improving energy density of methanol fuel |
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Application publication date: 20190514 |